Home / 143,074.76-197,445.64-78,550.00

Finding the Fourth Proportional to 143,074.76, 197,445.64 and 78,550.00

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Solution

The fourth proportional to 143,074.76, 197,445.64 and 78,550.00 is: 108,400.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,074.76 : 197,445.64 = 78,550.00 : x
  2. Step 2: Convert to fraction form
    143,074.76/197,445.64 = 78,550.00/x
  3. Step 3: Cross multiply
    143,074.76x = 197,445.64 × 78,550.00
  4. Step 4: Simplify right side
    143,074.76x = 15,509,354,727.08
  5. Step 5: Solve for x
    x = 15,509,354,727.08/143,074.76
  6. Step 6: Final answer
    x = 108,400.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.